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Dentists' performance in dentin-composite resin bonding before and after hands-on course learning
Yu-Hsin Huang1, Yin-Lin Wang2, Po-Yen Lin3
1Division of Restorative and Esthetic Dentistry, National Taiwan University Hospital, Taipei, Taiwan.
Summary
General practitioners improved their dental bonding strength after a hands-on course, particularly with self-etch adhesives. This continuing education enhanced dentin-composite bond quality, crucial for restoration longevity.
Area of Science:
- Dental Materials Science
- Restorative Dentistry
- Clinical Dentistry
Background:
- Restoration longevity relies on high-quality dentin-composite bonds.
- General practitioners' (GPs) understanding of bonding agents is critical for successful dental restorations.
Purpose of the Study:
- To evaluate learning outcomes in GPs using etch-and-rinse versus self-etch adhesives.
- To assess the impact of a hands-on bonding test course on dental practitioners' skills.
Main Methods:
- 30 GPs performed shear bond strength (SBS) tests with five adhesives (one etch-and-rinse, four self-etch).
- SBS tests were conducted pre- and post-demonstration, and after 24-h storage.
- Defined "qualified bond strength (QBS)" at 17 MPa; analyzed using paired t-tests and chi-square tests; SEM examined fracture surfaces.
Main Results:
- Self-etch adhesives (Single Bond universal, Versa Optibond) showed improved SBS post-demonstration.
- Single Bond universal consistently achieved the highest QBS percentages across all testing stages.
- The QBS percentages for Versa Optibond and Tetric-N Bond Self-Etch significantly increased post-course.
Conclusions:
- Dental bonding performance is influenced by both the operator and the specific adhesive product used.
- Hands-on continuing education courses demonstrably improve dentists' bonding strength, especially with self-etch systems.